<template>
  <view>
    <view class="search-box">
      <uni-search-bar clearButton="auto" :radius="100" cancelButton="none" @confirm="search" @input="input" ></uni-search-bar  >
      <view class="sugg-list" v-if="searchList.length !==0">
        <view class="sugg-item" v-for="(item,i) in searchList" :key="i" @click="gotoDetail(item)">
          <view class="goods-name">{{item.goods_name}}</view>
          <uni-icon  type="arrowright" size="16"></uni-icon>
        </view>
      </view>
     <view class="history-box" v-else>
       <view class="history-title">
         <text>搜索历史</text>
         <uni-icons type="trash" size="17"  @click="clean" ></uni-icons>
       </view>
       <view class="history-list">
         <uni-tag :text="item" v-for="(item, i) in histories" :key="i" @click="gotoGoodsList(item)"></uni-tag>
       </view>
     </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer:null,
        kw:'',
        searchList:[],
        historyList: []
      };
    },
    onLoad() {
      this.historyList=JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods:{
      input(e){
        clearTimeout(this.timer)
      this.timer=setTimeout(() => {
        this.kw=e.value
     this.getSearchList()
    },500)
    },
    async  getSearchList(){
            if(this.kw.length===0){
              this.searchList=[]
              return
            }
        const {data:res} =await uni.$http.get('/goods/qsearch',{query:this.kw})
            if(res.meta.status !==200) return uni.$showMsg()
            this.searchList=res.message
            this.saveSearchHistory()
          },
          gotoDetail(item){
            uni.navigateTo({
              url:"/subpkg/good_detail/good_detail?goods_id"+item.goods_id
            })
          },
          saveSearchHistory(){
            // this.historyList.push(this.kw)
            const set = new Set(this.historyList)
            set.delete(this.kw)
            set.add(this.kw)
            this.historyList= Array.from(set)
            uni.setStorageSync('kw',JSON.stringify(this.historyList))
          },
          clean(){
            this.historyList=[]
            uni.setStorageSync('kw','[]')
          },
          gotoGoodsList(kw){
            uni.navigateTo({
              url:'/subpkg/goods_list/goods_list?query='+kw
            })
          }
    },
    computed:{
      histories(){
        return [...this.historyList].reverse()
      }
    }
  }

</script>

<style lang="scss">
.search-box{
  position: sticky;
  top: 0;
  z-index: 2;
}
.sugg-list{
  padding: 0 5px;
  .sugg-item{
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
      .goods-name {
       // 文字不允许换行（单行文本）
       white-space: nowrap;
       // 溢出部分隐藏
       overflow: hidden;
       // 文本溢出后，使用 ... 代替
       text-overflow: ellipsis;
       margin-right: 3px;
     }
  }
}
.history-box{
  padding: 0 5px;
  .history-title{
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    height: 40px;
    border-bottom: 1px solid #efefef;
  }
  .history-list{
    display: flex;
    flex-wrap: wrap;
    .uni-tag{
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
